436

 To nest three layers of quotations/apostrophes do this:
 -------------------------------------------------------
 """  Nivel 1 "  Nivel 2 '  Nivel 3  '  "  """
  |           |          |           |  |   |
  |           |          +-----------+  |   |
  |           |                         |   |
  |           +-------------------------+   |
  |                                         |
  +-----------------------------------------+
  ------------------------------------------------------